#include <head.h>

int main(int argc, char const *argv[])
{
    FILE * fp;
    char buf[1024];
    fp = popen("ls -l" , "r");

    while (fgets( buf , sizeof(buf) , fp ) != NULL)
    {
        printf("张三%s" , buf);
    }
    

    pclose(fp);
    return 0;
}



